[FIX] psycopg2 / pg versions auth conflict

Downgrade auth method/encryption to md5 if initial odoo version is <=12
and postgres version >=14

odoo_openupgrade_wizard/tools/tools_postgres.py

@@ -47,24 +47,54 @@ def get_postgres_container(ctx):
         logger.info(f"Creating Postgres volume: {volume_name}")
         client.volumes.create(volume_name)
 
-    command = None
+    command = "postgres"
     postgres_extra_settings = ctx.obj["config"].get("postgres_extra_settings")
     if postgres_extra_settings:
-        command = "postgres"
         for key, value in postgres_extra_settings.items():
             command += f" -c {key}={value}"
 
     logger.info(f"Launching Postgres Container. (Image {image_name})")
-    container = run_container(
+
-        image_name,
+    # base environement variables
-        container_name,
-        command=command,
     environments = {
         "POSTGRES_USER": "odoo",
         "POSTGRES_PASSWORD": "odoo",
         "POSTGRES_DB": "postgres",
         "PGDATA": "/var/lib/postgresql/data/pgdata",
-        },
+    }
+
+    # if postgresql version is >= 14 and odoo <= 12 we need to use md5 for auth
+    # method and password encryption
+    try:
+        postgres_version = float(image_name.split(":")[1])
+    except ValueError:
+        raise Exception(
+            "Unable to extract postgres version "
+            f"from image name {image_name}. "
+            "Define version in the image name is mandatory."
+        )
+
+    try:
+        odoo_start_version = float(ctx.obj["config"]["odoo_versions"][0])
+    except ValueError:
+        raise Exception(
+            "Unable to extract start odoo version from odoo_versions "
+            f"{ctx.obj['config']['odoo_versions']}"
+        )
+
+    if odoo_start_version <= 12 and postgres_version >= 14:
+        environments |= {
+            "POSTGRES_HOST_AUTH_METHOD": "md5",
+            "POSTGRES_INITDB_ARGS": "--auth-host=md5",
+        }
+
+        command += " -c password_encryption=md5"
+
+    container = run_container(
+        image_name,
+        container_name,
+        command=command,
+        environments=environments,
         volumes={
             # Data volume
             volume_name: "/var/lib/postgresql/data/pgdata/",

tests/cli_40_downgrade_pg_auth_method_for_old_versions_test.py

@@ -0,0 +1,30 @@
+from . import cli_runner_invoke, move_to_test_folder
+
+
+def test_cli_downgrade_pg_auth_method_for_old_versions():
+    move_to_test_folder()
+
+    cli_runner_invoke(
+        [
+            "init",
+            "--project-name=test-cli-downgrade-auth-method",
+            "--initial-version=12.0",
+            "--final-version=13.0",
+            "--postgresql-version=14",
+        ],
+    )
+
+    move_to_test_folder()
+    cli_runner_invoke(["get-code"])
+    cli_runner_invoke(["docker-build", "--versions=12.0"])
+
+    db_name = "database_test_cli-downgrade-auth-method__run"
+    cli_runner_invoke(
+        [
+            "run",
+            "--step=1",
+            f"--database={db_name}",
+            "--init-modules=base",
+            "--stop-after-init",
+        ],
+    )